Computer Rooms 101 Geoffrey Day

Will the floor collapse? 42RU rack - 115kg 40 * 1Ru servers - HP DL360, 16.78kg each Shelves, cables etc 15KG per rack Can your floor support.9 tonne per square metre Horror story

Getting the equipment in. Is the door big enough? Yes but will it fit in the lift? Will the lift take the weight ? Horror story 1 Can you use the lift? Horror stories 2 and 3

Power - UPS Load (va) = volts X maximum amperage for each bit of equipment Load (va) = volts X maximum amperage for each bit of equipment Add them all up, that’s the minimum size you need Add them all up, that’s the minimum size you need How long does it last for? How long does it last for? Where are you putting it, these things can be physically big? Where are you putting it, these things can be physically big? Horror story 1

Air conditioner You pay for power in – UPS You pay for power in – UPS You pay for power out – air conditioner You pay for power out – air conditioner Most equipment tells you how much heat it produces Most equipment tells you how much heat it produces Add them all up Add them all up Now go and buy 2 air conditioners, in case 1 fails Now go and buy 2 air conditioners, in case 1 fails Horror stories

Fire detection Remember – ceiling, room and floor Remember – ceiling, room and floor VESDA – very early smoke detection apparatus VESDA – very early smoke detection apparatus Particle based detection of smoke Particle based detection of smoke Horror story

Fire Suppression - Water Everything will get wet, we are saving the building Everything will get wet, we are saving the building Remember to have a drain so the water can get out Remember to have a drain so the water can get out What about leaks? What about leaks? Horror story

Fire Suppression - gas Must “fire rate the room”, ie a fire cannot escape for a period of time Must “fire rate the room”, ie a fire cannot escape for a period of time Special wall coverings, doors etc, No gaps for gas to escape Special wall coverings, doors etc, No gaps for gas to escape INERGEN is a mixture of nitrogen, argon and carbon dioxide INERGEN is a mixture of nitrogen, argon and carbon dioxide Where do you store the gas? Where do you store the gas? Where do you vent the gas? Where do you vent the gas? Horror story

Power Circuits You have 2 circuits to each rack right? You have 2 circuits to each rack right? Horror story 1 Can the power circuit you plug the UPS into take the load? Can the power board? Can the power circuit you plug the UPS into take the load? Can the power board? 15amp, 20amp or bigger? 15amp, 20amp or bigger? Horror story 2

So you want a generator How big? How big? Where? (outside of course)‏ Where? (outside of course)‏ Where do you keep the fuel? Where do you keep the fuel? How to refill the tank during an outage? How to refill the tank during an outage? Diesel does not last forever Diesel does not last forever

Lastly You are going to test all this regularly aren’t you ! Final Horror story